Food-delivery #platforms didn't 'disrupt' the #restaurant industry, but they still had a meaningful impact on market composition. In the latest #PlatformPapers blog, Manav Raj and JP Eggers explain what happens when delivery platforms come to town. platformpapers.substack.com/p/when-deliv...

What happens to ecosystem diversity and #platform match quality after a platform introduces paid #discovery tools (e.g., Apple's search result ads)? @kai-zzzzzz.bsky.social and co-authors share insights from #Goodreads introduction of paid book giveaways. platformpapers.substack.com/p/the-price-...

🧪 Women are represented as younger than men across occupations/social roles in data from Google,Wikipedia,IMDB, Flickr,YouTube and LLMs.The bias is strongest for occupations with high status/earnings.ChatGPT perpetuates this bias when generating and evaluating resumes. www.nature.com/articles/s41...

Translation technology is incredible — it’s the #1 AI use case, and I’ve believed that for years. The demand is huge, and the tools are almost there. With better interactive UI design, the upside for society will be significant. www.nytimes.com/2025/09/18/t...

This @beijingpalmer.bsky.social post reminded me I have been meaning to update @pewresearch.org's estimate of total newspaper newsroom jobs - which was 30,820 as of 2020 Using BLS OEWS data (w/ same methodology as Pew) the 2024 number is 29,260 - down another 5% www.pewresearch.org/chart/sotnm-...

Call for papers, 4th UK Workshop on Digital Economics, London 28 November 2025: competitionpolicy.ac.uk/events/4th-w... This is always a great event

I wrote an article about linguistic bias and the internet for the BBC, based on a paper @ze.vin, @ethanz.bsky.social, and I wrote comparing four language-specific samples of YouTube. www.bbc.com/future/artic...

Want a good starting point for learning good principles of Dataviz? I'd highly recommend @andrew.heiss.phd course--Data Visualization with R. Reading materials, slides, lecture videos, examples, code, etc. are all posted for free on his website.

Got around to pushing all my @cuboulder.info Web Data Science @jupyter.org notebooks to @github.com Enjoy! github.com/cuinfoscienc...

There have been a number of recent articles on statistical power in quantitative political science. This is something that I think deserves more attention and discussion. A short thread of the articles I have read. 🧵

Perplexity is repeatedly modifying their user agent and changing IPs and ASNs to hide their crawling activity, in direct conflict with explicit no-crawl preferences expressed by websites. blog.cloudflare.com/perplexity-i...

📣 Thrilled to announce our new paper, "Monetizing Platforms: An Empirical Analysis of Supply and Demand Responses to Entry Costs in Two-Sided Markets," is now published in Management Science! When a digital platform starts charging for access, who wins and who loses? 🧵👇

Inspiring PDW on using sensitivity analysis in empirical management research. My contribution is to present the sensemakr package by Cinelli & Hazlett (2020) for observational designs. Thanks a lot to the organizers for putting this fantastic session together. #AOM2025

Where the cuts are going to be felt the most. www.nytimes.com/interactive/...

24/ An excellent recent survey revisits the theoretical literature on herds & cascades It notes that cascades cause poor information aggregation, lead to fragile mass behaviors, and remain central to understanding social learning. Those 1992 papers launched a vast literature 😎

Academia will form these little pockets -- people whose theorizing is outrageous & supported by methods outdated since the 90s -- but once it reaches a critical size those people just review each others papers & grants, form societies, hand out awards etc, like a self-contained parallel society.

its crazy how dominant germany was in science (especially chemistry) in the 19th century, it was basically the international language for scientists, people came from all over the world to train at heidelberg etc, and then....

Wikipedia may seem like an unlikely site of resistance, but in an era of escalating censorship, disinformation, & erosion of public trust, Wikipedia is a model for collective governance led by next generation of cultural workers, @alexmar.bsky.social reports: prismreports.org/2025/05/12/w...

Just out in WWW last week! 📜Our work on substitution patterns between Wikipedia and ChatGPT. We find *heterogeneous* impacts, where Wiki articles that are similar to ChatGPT outputs see a greater drop in views than dissimilar articles: arxiv.org/abs/2503.00757

Have you ever asked yourself about the overall extent of TikTok? Here some numbers from "Just Another Hour on TikTok" - Great compliment to @bendavidsteel.bsky.social for this data collection effort! w/ @miriamschirmer.bsky.social & Derek Ruths arxiv.org/abs/2504.13279

Climate Terminology Does Not Matter Across tens of thousands of participants in two large-scale experiments, we found that labeling climate change in different ways had no effect on their stated willingness to act. jayvanbavellab.substack.com/p/climate-te... via @dgoldwert.bsky.social

Wow! Three scholars at Columbia, Michigan, & Maryland just introduced a measure of the partisan leanings of employers in the U.S. The data is constructed by linking voter registrations to online worker profiles. VRscores capture the political affiliations of 21.8M workers across 2.6M employers.

Awesome post by @molly.wiki on the tensions of free knowledge production and commons in the face of extractive technologies like AI. www.citationneeded.news/free-and-ope...

Excited to share our revised working paper on Machine-assisted Content Creation on Peer Production Platforms—we have made significant changes and additions! Our study explores how AI-powered translation reshapes multilingual content creation on platforms like Wikipedia.

Bocconi Marketing is hiring a rookie professor of consumer behavior. Apply by Feb 28. jobmarket.unibocconi.eu?id=747

New paper with amazing Eve Coslon-Sihra, "Does Inequality Affect the Needs of the Poor?" now published in the JEEA! We show inequality redefines needs at the bottom of the pyramid, deepening the calorie consumption puzzle and worsening malnutrition. A thread below ⬇️

It's ready! 💫 A new blog post in which I list of all the tools and apps I've been using for work, plus all my opinions about them. maria-antoniak.github.io/2024/12/30/o... Featuring @kagi.com, @warp.dev, @paperpile.bsky.social, @are.na, Fantastical, @obsidian.md, Claude, and more.

We’re launching a FREE course on LLM Agents 🥳 📖 Learn what Agents are 🕵️ Build your own Agents using the latest libraries and tools. 🎓 Earn a certificate of completion to showcase your achievement. Enroll now 👉 huggingface.us17.list-manage.com/subscribe?u=...

Ambitious and important JMP from Ruchi Mahadeshwar (with Alex Zhou) at Brown. They use experimental variation and a structural model to show that 1) on margin, disutility from sex work is *16* times that of non-sex work and 2) labor supply of sex work is v. elastic. drive.google.com/file/d/15oXa...

It's a good time to mention that Seth Benzell and I have a podcast called Justified Posteriors discussing the economics of AI and other technologies. Our latest episode considers @timobres.bsky.social's paper on AI and Aggregate Growth. empiricrafting.substack.com/p/beyond-tas...

Turns out there are multiple existing packages to help you to scrape videos from TikTok outside of the API. Not hard and a bunch of research groups are doing it. No excuse for all the web and social media and computational social scientists to keep ignoring this vast platform.

This is a thread about remaking the tech sector.

As a result, we have a new phenomenon: news deserts, which are areas where communities lack access to credible local news sources, once again damaging democracy and civic citizenship: cmpf.eui.eu/news-deserts...

📣The Call for Papers for the 12th edition of Wiki Workshop is out📣 Submit your 2-page extended abstract of your research about Wikimedia projects by March 9! All submissions are non-archival (ongoing, completed, already published works are welcome). More info: meta.wikimedia.org/wiki/Wiki_Wo...

What does a trustworthy tech governance system look like? I spent the break asking this question when removing a moth cocoon from an air sensor I use to manage my asthma. Along the way, I saw the most democratic flowchart I’ve ever seen. Here's the story: natematias.medium.com/democracy-is...

I should be working on my paper revision, but I could not stop myself from pulling relevant data and creating this plot: Elon Musk's Wokepedia attack seems to act as a surprisingly effective call for donations!

If you've never donated to Wikipedia, now's the time. Elon Musk is attacking it because it's one of the only sources of honest, curated information that he can't control. www.newsweek.com/elon-musk-ta...

"America’s once reliably boring home insurance market has become the place where climate shocks collide with everyday life." www.nytimes.com/interactive/...

Just published on APSR First View: "Exposure to Mass Shootings and Voting Directly on Gun Policy" by G. Agustin Markarian and Benjamin J. Newman. www.cambridge.org/core/journal...

Forthcoming in the AER: "Ownership Concentration and Strategic Supply Reduction" by Ulrich Doraszelski, Katja Seim, Michael Sinkinson, and Peichun Wang. www.aeaweb.org/articles?id=...

🚨📜CALL FOR PAPERS 📜🚨 *New Data for Consumer Insights Conference* When: May 30-31, 2025 Where: Chicago Booth Submission Deadline: Jan 6, 2025 Keynotes: @susanathey.bsky.social and Greg Lewis Both methodological and empirical submissions are welcome. Submit here: ndconference2025.hotcrp.com

new WP y'all www.nber.org/papers/w33236

And now a very practical talk that experiments with different LLMs, finetuned baselines, off-the-shelf tools, dataset sizes, and prompts on curated non-English historical data. "Extracting Social Connections from Finnish Karelian Refugee Interviews Using LLMs" presented by Jenna Kanerva #chr2024

A somewhat different Data Colada post today criticising popular empirical method in political science. datacolada.org/121 The bit that caught my eye: an editor told an author not to post anonymous reviews rejecting a paper. Let me tell you why that is crazy. 🧵

In collab w/ Semantic Scholar, we conducted a large scale (800+) survey of researcher usage and perceptions of LLMs for science. Major findings: +Most are using LLMs already, mostly for writing +LLMs seem to be a win for research equity +But some groups, like women, have more ethical concerns too

Economists love using linear regression to estimate treatment effects — it turns out that there are perils to this method, but also amazing perks Come with me in this 🧵 if you want to learn about our now-published paper "Contamination Bias in Linear Regressions!" 1/ (Twitter rerun!)

“If anything has changed about my reading over the years, it is that I value the state a book puts me in more than I value the specific contents” lithub.com/in-praise-of...

Every person who has had to teach a Gen Zer how to use R

Totally agree with @shengwuli.bsky.social. The broader point is that I think we need to directly address the elephant in the room: the *huge* impact of context--i.e., seemingly irrelevant factors--on choice and beliefs. 🧵 on the behavioral economics of context, with some new data at the end.

Link to the book, which I highly recommend: www.taylorfrancis.com/books/mono/1...